研究表明股权结构对长期超额收益有影响。
And the ownership structure have effect on the long-run abnormal stock returns.
对影响长期超额收益的几个影响因素进行了分析。
There are some factors influent the long - run abnormal stock returns.
IPO长期业绩的早期研究以算术平均的累计调整收益率为指标，发现我国新股存在着长期超额报酬。
By equal-weighted CAR, former researches on the long-run performance of Chinese IPOs have found that IPOs in Chinese stock exchanges outperform index in the three years after going public.
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